The following are the specifications for all the YES WorldWatch V7 watches:
Across the planet there are upwards of 20 different Daylight Saving Time systems. The WorldWatch incorporates all of them in the programming for the relevant cities and automatically adjusts for them. If need be, DST can also be turned ON and OFF manually.
The V7 is constructed to 10 ATM water resistance specifications. This means you can take it swimming, no problem. What you don’t want to do is to operate the buttons while submerged or in contact with water.